HttpClient client = new HttpClient();
GetMethod gm = new GetMethod("www.abc.com");
 gm.addRequestHeader(new Header("accept-encoding","gzip,deflate"));//设置请求头
gm.setQueryString(
               new NameValuePair[]{
        new NameValuePair("userName","abc"),
        new NameValuePair("password","ccc")
                        
        });
gm.releaseConnection();